CVE-2026-114127

Astro is a web framework for content-driven websites. From 7.1.0 until 7.3.3, Astro's server-side View Transition CSS generator does not keep string animation properties within their generated declarations. An application that passes attacker-controlled data into properties such as duration, delay, easing, direction, fillMode, or animation names can allow CSS delimiters to terminate the declaration and add attacker-selected rules to the server-rendered page. The generated stylesheet still escapes literal less-than characters, so the injected content cannot terminate the style element or directly inject HTML or JavaScript. The injected CSS can conceal or reposition content, add generated text, and otherwise misrepresent the interface; some applications may also expose data already present in selectable DOM attributes through conditional resource loads. This issue is fixed in 7.3.3.

CVSS

No CVSS.

References

Link	Resource
https://github.com/withastro/astro/commit/0b4dc3a211910b589d3805ab4dfedf11b0e712bb
https://github.com/withastro/astro/pull/17970
https://github.com/withastro/astro/releases/tag/astro@7.3.3
https://github.com/withastro/astro/security/advisories/GHSA-mpr7-6m5w-76rw
https://github.com/withastro/astro/security/advisories/GHSA-mpr7-6m5w-76rw

Configurations

No configuration.

History

30 Oct 2026, 21:16

Type	Values Removed	Values Added
References	~~() https://github.com/withastro/astro/security/advisories/GHSA-mpr7-6m5w-76rw -~~	() https://github.com/withastro/astro/security/advisories/GHSA-mpr7-6m5w-76rw -

21 Oct 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-21 18:17

Updated : 2026-10-30 21:16

NVD link : CVE-2026-114127

Mitre link : CVE-2026-114127

CVE.ORG link : CVE-2026-114127

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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